package com.gn.compile;

public class test
{
    public static void main(String[] args)
    {
        StringBuffer buffer = new StringBuffer();
        buffer.append("编译成功");

        String str = buffer.toString();
        System.out.println(str);
        System.out.println(buffer.length());

        System.out.println(System.getProperty("user.dir"));
    }
}
